Every month, 100,000 readers use the Dinosaur Database, but we receive no support from you. Developing and updating the database requires a lot of work. Therefore, as of September 1, 2025, the database will be closed. If you want it to remain open and be updated, please support us via the "Buy us a coffee" button available on every page or via the Support page.
Dinosaur: Protoceratops andrewsi

Length*: | 2.15 m | 7.1 ft |
Weight*: | 115 kg | 254 lb |
*The largest known specimen
Period
Epoch: Late Cretaceous
Stage: Late Campanian
Years: 83.6–72.1 Ma
Details
Status: valid
Author: Granger & Gregory
Year: 1923
Distribution
Area: Asia
Country: Mongolia, China
Region: Ömnögovi, Gansu Inner Mongolia
Formation: Djadokhta, Minhe
Locations
Sources
Material: At least several dozen individuals (skulls and postcranium).
References: Granger, W., Gregory, W.K. (1923). “Protoceratops andrewsi, a pre-ceratopsian dinosaur from Mongolia”.Słowiak, J., Tereshchenko, V.S., Fostowicz-Frelik, Ł. (2019). "Appendicular skeleton of Protoceratops andrewsi (Dinosauria, Ornithischia): comparative morphology, ontogenetic changes, and the implications for non-ceratopsid ceratopsian locomotion.